So far, the ship’s owners and the insurance company had been uncooperative. They seemed loath to disclose the ship’s manifest or even confirm the type of cargo on board. An odd situation, to say the least.

“We get anything from the company yet?” Paul asked “Negative,” the controller said. “Nothing but silence.” “You know, technically this ship is a wreck,” he said. “We salvage it, and the cargo is ours.” “I don’t think Dirk is going to approve the budget for that,” Gamay said. “But there’s nothing to stop us poking around. Let’s find an opening and see if we can get Rapunzel inside.” Paul brought the Grouper toward the aft end of the big ship. The crew’s quarters and the bridge lay there, partially torn open, as the crushing impact with the seafloor had ripped away a third of the structure.

“It looks like a cross section,” Paul said.

“That might be good for us,” Gamay said. “Nothing like easy access.” Again Paul blushed, not sure Gamay even realized her double entendre. He brought the Grouper to a hover twenty feet away from what was left of the bridge. Moments later, Rapunzel was in the water and moving toward the gaping hole where a part of the wall had once been.

With the autopilot keeping the Grouper in position, Paul turned to his wife. She lay flat in the aft section of the sub. The familiar visor covered her head, the wired gauntlets and boots on her hands and feet. The rest of her was clad in skintight neoprene.

“How is it?” he asked.

“Feels weird to be lying down,” she said. “I’m used to doing it standing up.” The intercom buzzed. “Paul, your heart rate is jumping again. Are you all right?” “I’m fine,” he replied tersely, then covered the intercom. “Honey, can you just watch what you say until we get back up topside?” She laughed, and Paul knew full well that she was teasing him. There was little she liked more than to poke holes in his reserved New England attitude. It was one of the reasons he loved her so much.

“Sorry,” she said with a sly smile.

Paul looked outside and watched the little mechanical figure move toward the shattered bridge and then disappear inside. On a smart phone — sized monitor he watched what Gamay saw in the visor: the view through Rapunzel’s eyes as she traveled deeper into the ship. In a corner of the bridge they discovered something.

“Is that a body?” Paul asked.

“Looks like it,” she said.

“What happened to him?”

Rapunzel moved closer.

“Looks like he’s been burned,” Gamay said. “Except…” The cameras on Rapunzel panned around the room. The walls were clean and smooth, the gray paint unmarred. Even the chair beside the man looked undamaged.

“No sign of fire,” Paul said.

“As gross as this sounds,” she said, “I’m going to get a sample.” Rapunzel moved in, extended a little drill with a vacuum tube attached. The drill hit the man’s thigh and began to turn, drawing out a two-inch core. The vacuum system pulled it into a sealed container.

“I’m taking her deeper into the ship.” With Gamay occupied controlling Rapunzel, and the autopilot keeping the Grouper on station, Paul had little to do.

Boredom at sixteen thousand feet. It was worse than being trapped on an airliner.

The intercom buzzed. “Paul, we’re picking up a sonar contact.” Now his heart had a different reason to race. “What kind?” “Unknown,” the controller said. “West of you and very faint. But moving fast.” “Mechanical or natural?” Paul asked.

“Unknown…” the controller began, then, “It’s small…” Paul and Gamay could only wait in silence. Paul imagined the sonar operator staring at the screen, listening to the earphones and trying to place the nature of the target.

“Damn it,” the controller said. “It’s a torpedo. Two of them, heading your way.” Paul grabbed the Grouper’s thrust controller, switching off the autopilot.

“Get Rapunzel back,” he said.

Gamay began to move, gesturing quickly as she turned the little remote explorer around.

“Move, Paul,” the controller urged. “They’re closing fast.” Forgetting Rapunzel, Paul threw the Grouper into reverse, backing away from the wreck and then turning the small sub around.

“I can get her out of there,” Gamay said.

“We don’t have time.”

Paul pushed the throttle to full and blew out some of the ballast. The Grouper began to rise and accelerate, but she was nothing like the Barracuda. Seven knots was her maximum.

Suddenly, the controller’s voice broke in a panic. “The targets are above you, Paul. You’re climbing right into them.” Paul went back to a dive, thinking it would have been nice to have known that a few minutes ago. “Where are they coming from?” “Don’t know,” came the reply. “Head south. Toward the bow. That will take you away from their track. “ Paul put the Grouper in a turn. Unable to see or track the targets, he had to rely on the controller.

“Keep moving,” the voice on the intercom said. “You have ten seconds.” There was no way the Grouper could avoid a torpedo that had locked onto it; their only hope was to confuse it with clutter. Paul decided to pop up, taking the Grouper over the deck, hugging the Kinjara Maru as closely as possible.

A resounding clang told him he’d hit something protruding. The reverberation was loud but inconsequential, and Paul didn’t dare separate from the larger ship.

“Three seconds, two… one…” “Paul?” Gamay called. She was scared, he could hear it. There was nothing he could do about it.

A high-pitched whining sound raced overhead as the first torpedo passed. Another followed moments later, heading off into the distance. The torpedoes had missed. And as Paul listened he couldn’t hear them coming back.

Paul breathed a sigh of relief, but he had to be sure. “Are they turning?” “No,” the controller said. “They’re continuing on. Straight and true.” Paul sighed with relief, his shoulders visibly slumping. And then a pair of reverberating explosions rocked the depths of the Atlantic.

The shock wave slammed the Grouper. Paul hit his head and felt the craft tilt. Gamay slid into him, and the submersible banged into one of the Kinjara Maru’s crane booms.

Another explosion followed, more distant but still strongly felt. The Grouper shuddered and then steadied as the shocks passed on.

“Are we okay?” Gamay shouted, pulling off the visor.

Paul glanced around, he saw no leaks. Time to get to the surface.

“Where on earth did those come from?” Paul shouted.

“Sorry,” the controller said. “The first two masked them. This isn’t exactly a Seawolf-class sonar array we’ve got going here.” Paul understood that the setup was designed to find small objects and map the seafloor, not track fast-moving torpedoes at great depths. Time to upgrade, he thought “Any more of them?” he asked over the comm.

The controller was silent for a moment, as if he were checking and rechecking. “No,” the man said finally. “But we are picking up a vibration. It sounds like…” The controller’s words trailed off, an act that concerned Paul. A vibration. What did he mean?

As Paul waited for clarification he began to feel something. Where his hand rested on the control panel he could feel a tremor of some kind. At first it was subtle, but then the Grouper began to shake and slide to the side as if some force or current was pushing it out of position. In seconds the tremor became a deep rumbling, like a freight train approaching.

“What is that?” he asked.

“We’re reading a massive signal up here. I’ve never seen anything like it. All kinds of movement.” “Where?”

“Everywhere,” the voice said, sounding panicked.

There was a terrible pause as the rumbling increased and then their controller spoke again.